<template>
  <!-- 工种分布情况 -->
  <div class="job-wrap">
    <div class="header">
      <p class="title">工种分布情况</p>
    </div>
    <div class="chart-wrap">
      <Echart
        ref="chartContainer"
        id="base-chart"
        :isEchartsGl="true"
        :options="option"
        height="288px"
        width="100%"
      />
    </div>
  </div>
</template>

<script>
import { reactive, toRefs, onMounted, ref } from "vue";
import Echart from "@/components/echartGL/index.vue";
import { ajax } from "@/store/service";
import { dataGroup } from "@/utils";

export default {
  components: { Echart },
  setup() {
    // 生成扇形的曲面参数方程
    const getParametricEquation = (
      startRatio,
      endRatio,
      isSelected,
      isHovered,
      k,
      height
    ) => {
      // 计算
      let midRatio = (startRatio + endRatio) / 2;
      let startRadian = startRatio * Math.PI * 2;
      let endRadian = endRatio * Math.PI * 2;
      let midRadian = midRatio * Math.PI * 2;

      // 如果只有一个扇形，则不实现选中效果。
      if (startRatio === 0 && endRatio === 1) {
        isSelected = false;
      }

      // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
      k = typeof k !== "undefined" ? k : 1 / 3;

      // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
      let offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
      let offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0;

      // 计算高亮效果的放大比例（未高亮，则比例为 1）
      let hoverRate = isHovered ? 1.05 : 1;

      // 返回曲面参数方程
      return {
        u: {
          min: -Math.PI,
          max: Math.PI * 3,
          step: Math.PI / 32,
        },

        v: {
          min: 0,
          max: Math.PI * 2,
          step: Math.PI / 20,
        },

        x: function (u, v) {
          if (u < startRadian) {
            return (
              offsetX +
              Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          if (u > endRadian) {
            return (
              offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        y: function (u, v) {
          if (u < startRadian) {
            return (
              offsetY +
              Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          if (u > endRadian) {
            return (
              offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
            );
          }
          return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        z: function (u, v) {
          if (u < -Math.PI * 0.5) {
            return Math.sin(u);
          }
          if (u > Math.PI * 2.5) {
            return Math.sin(u);
          }
          return Math.sin(v) > 0 ? 1 * height : -1;
        },
      };
    };
    // 生成模拟 3D 饼图的配置项
    const getPie3D = (pieData, internalDiameterRatio) => {
      let series = [];
      let sumValue = 0;
      let startValue = 0;
      let endValue = 0;
      let legendData = [];
      let k =
        typeof internalDiameterRatio !== "undefined"
          ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
          : 1 / 3;
      // 为每一个饼图数据，生成一个 series-surface 配置
      for (let i = 0; i < pieData.length; i++) {
        sumValue += pieData[i].value;

        let seriesItem = {
          name:
            typeof pieData[i].name === "undefined"
              ? `series${i}`
              : pieData[i].name,
          type: "surface",
          parametric: true,
          wireframe: {
            show: false,
          },
          pieData: pieData[i],
          pieStatus: {
            selected: false,
            hovered: false,
            k: k,
          },
        };

        if (typeof pieData[i].itemStyle != "undefined") {
          let itemStyle = {};
          typeof pieData[i].itemStyle.color != "undefined"
            ? (itemStyle.color = pieData[i].itemStyle.color)
            : null;
          typeof pieData[i].itemStyle.opacity != "undefined"
            ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
            : null;
          seriesItem.itemStyle = itemStyle;
        }
        series.push(seriesItem);
      }

      // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
      // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
      for (let i = 0; i < series.length; i++) {
        endValue = startValue + series[i].pieData.value;
        // console.log(series[i]);
        series[i].pieData.startRatio = startValue / sumValue;
        series[i].pieData.endRatio = endValue / sumValue;
        series[i].parametricEquation = getParametricEquation(
          series[i].pieData.startRatio,
          series[i].pieData.endRatio,
          false,
          false,
          k,
          series[i].pieData.value
        );
        startValue = endValue;
        legendData.push(series[i].name);
      }
      return series;
    };
    // 传入数据生成 option
    let optionsData = [
      {
        name: "特种作业（机手）",
        value: 94,
        itemStyle: {
          color: "RGBA(104, 110, 120, .7)",
        },
      },
      {
        name: "普通工种",
        value: 120,
        itemStyle: {
          color: "RGBA(1, 101, 211, .7)",
        },
      },
      {
        name: "项目管理人员",
        value: 11,
        itemStyle: {
          color: "RGBA(42, 180, 193, .7)",
        },
      },
    ];
    let series = ref([]);
    series = getPie3D(optionsData, 0.8, 240, 28, 26, 0.5);

    series.push({
      name: "pie2d",
      type: "pie",
      label: {
        opacity: 1,
        fontSize: 16,
      },
      labelLine: {
        length: 20,
        length2: 40,
      },
      startAngle: -30, //起始角度，支持范围[0, 360]。
      clockwise: false, //饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
      radius: ["50%", "50%"],
      center: ["50%", "50%"],
      data: optionsData,
      itemStyle: {
        opacity: 1,
      },
    });

    const data = reactive({
      option: {
        legend: {
          tooltip: {
            show: true,
          },
          data: ["项目管理人员", "特种作业（机手）", "普通工种"],
          bottom: "5%",
          textStyle: {
            color: "#fff",
            fontSize: 16,
          },
        },
        animation: true,
        tooltip: {
          formatter: (params) => {
            if (
              params.seriesName !== "mouseoutSeries" &&
              params.seriesName !== "pie2d"
            ) {
              return `${
                params.seriesName
              }<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${
                params.color
              };"></span>${series[params.seriesIndex].pieData.value + "人"}`;
            }
          },
          textStyle: {
            fontSize: 12,
          },
        },
        title: {
          x: "center",
          top: "20",
          textStyle: {
            color: "#fff",
            fontSize: 22,
          },
        },
        labelLine: {
          show: true,
          lineStyle: {
            color: "#fff",
          },
        },
        label: {
          show: true,
          position: "outside",
          formatter: "{b}\n{d}%",
          color: "#fff",
        },
        xAxis3D: {
          min: -1,
          max: 1,
        },
        yAxis3D: {
          min: -1,
          max: 1,
        },
        zAxis3D: {
          min: -1,
          max: 1,
        },
        grid3D: {
          show: false,
          boxHeight: 0.0005,
          bottom: "50%",
          viewControl: {
            distance: 180,
            alpha: 25,
            beta: 60,
            autoRotate: false, // 自动旋转
            rotateSensitivity: 2, // 0:无法旋转
            zoomSensitivity: 1, //0:无法缩放
          },
        },
        series: series,
      },
    });

    const calculateRate = (data) => {
      const newData = [];
      const colorArr = [
        "RGBA(104, 110, 120, .7)",
        "RGBA(1, 101, 211, .7)",
        "RGBA(42, 180, 193, .7)",
      ];
      const totalValue = data.reduce(
        (total, item) => total + parseInt(item.value),
        0
      );
      data.forEach((item, index) => {
        const value = parseInt(item.value);
        const rate = (value / totalValue) * 100; // 计算比例（百分比）
        const newItem = {
          ...item,
          value: item.value - 0,
          rate: rate.toFixed(2) - 0,
          itemStyle: { color: colorArr[index] },
          name: item.s,
        };
        newData.push(newItem);
      });

      return newData;
    };

    const getJobDistributionChart = async () => {
      let res = await ajax.jobDistributionChart();
      let newRes = calculateRate(res);
      let items = dataGroup(res);
      let series = getPie3D(newRes, 0.8, 240, 28, 26, 0.5);
      series.push({
        name: "pie2d",
        type: "pie",
        label: {
          opacity: 1,
          fontSize: 16,
        },
        labelLine: {
          length: 20,
          length2: 25,
        },
        startAngle: -40,
        clockwise: false,
        radius: ["50%", "60%"],
        center: ["50%", "50%"],
        data: optionsData,
        itemStyle: {
          opacity: 0,
        },
      });
      data.option.series = series;
      data.option.legend.data = items.s;
    };

    // 饼图位置恢复
    const handleMouseUp = () => {
      data.option.grid3D.viewControl = {
        distance: 180,
        alpha: 25,
        beta: 60,
        autoRotate: false, // 自动旋转
        rotateSensitivity: 2, // 0:无法旋转
        zoomSensitivity: 1, //0:无法缩放
      };
    };

    onMounted(() => {
      getJobDistributionChart();
      document.body.addEventListener("mouseup", handleMouseUp);
    });

    return {
      ...toRefs(data),
      series,
    };
  },
};
</script>

<style scoped lang='scss'>
.job-wrap {
  width: 548px;
  height: 408px;
  .header {
    width: 100%;
    height: 80px;
    background: url("@/assets/longscreen2/title-short.png");
    background-size: 100%;
    padding-top: 15px;
    box-sizing: border-box;
    margin-bottom: 40px;
    .title {
      font-size: 22px;
      font-family: JLinXin;
      font-weight: 600;
      line-height: 22px;
      background: #fffde8 linear-gradient(180deg, #e8feff 40%, #00a9ff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-left: 73px;
      font-weight: bold;
    }
  }
  .chart-wrap {
    height: 288px;
  }
}
</style>